Feed-roll adjustment.



H L MHCHELL.. 1 FEED ROLL ADJUSTMENT.

APPLICATION FILED SEPT.25. 1915.

' f/@maar 4H 1. MITCHELL.

F E E D R 0 LL `AD1U STM'ENT. APPLICATION FILED SEPT. i915.

1,255,625. rammed Feb. 5,1918.

' 3 SHEETS-SHEET 2f.

III

H LMITCHELL KFEED aoLL ADJUSTMENT. APPLICATION FILED SEPT.25. 11H5.

y3 SHEETS-SHEET 3.-

Patnted Fehl, w18.

aan

HARRISON J. MIIcrInLI., or Bnnorg, wisconsin, assrenon To 1. B. YATEs MACHINE i .coJyIPANY, or isELoIT, wisconsin. a conPonArIoN or WISCONSIN.

Specification of Letters lratent.

Original application filed .T une 2.5, 1915, Serial No. 36,167'. Divided and this application filed September 25,

1915. Serial No. 52,583. j

CJi

T all to hom t may concern Be it known that l, l'lAnnIsoN J. MrroHnnL,

ing application vSerial No. 36,167, filed June .25. 1915, which matured into PatentNo.

1,207,976, datcd Dec. 12, 1916, has to do particularly with the means for vertically adjustingthe upper and lower in-rolls of a. wood-working machine, yas distinguished from the wood-working machinev in general which forms the subject matter of said parent application. jjnefcrred embodiment of the invention is set forth in the accompanying drawings and in the detailed dee scription based thereon, and in these 4drawings- ,Y .Y .Figure 1 is a vertical,longitudinal section through the end of` thewood-Working machine showing the feed rolls;

Fig. 2 is aside elevation of those parts of the machine shown in Fig. 1;

l? ig. 3 is a transverse section immediately to the rear of the feed rolls; andV i Fig. 4 is a detail plan view showing the crossconnection between certainparts of the adjusting mechanism. Y j

Immediately to the .rear of the sectional gages 11 and the receiving roll12 and in advance of the, sectional gages 13, described in detail in my cti-pending application referredv to above, is arranged a pair of in-rolls comprising u smooth surface roll 14 and a ribbed surface roll 15, between which the board is adapted to be received and fed toward the rear to the first tool. The upper in-roll 15 is mounted upon a shaft 1,6 in a boxing 17 Yslidably `mounted within guides 18, the said boxes being suspended by means of cords 19 extending around pulleys 20 on the shaft 2i to which is fxedly secured a sector sheave 22 upon the surface of which lies a'cord 23 supporting a counterweight 24bymeans of which the weight of the upper in-roll y15 is so far compensated as to facilitate the vertical adjustment of said roll; j The lower in-roll .14 mounted on the shaft 25 is normally fixed as to height but it is vertically adjustable'by means of the eccenrl`his invention, a division of my co-pend-` Vtric 27 from the shafts of which eccentric arm 28 extendsand is connected by means of a rod 29 to an arm 30 on the shaft 31,

Vprovided with a beveled gear 32 in mesh* with a similar gear 33 on a shaft 34 provided with `a crank arm 35 having a handle 36. The lowerin-roll is adjusted vertically by actuating the'handle 3G whereby the pinions 33 and 32 rock the shaft 31 withits arm 3() and thus angularly adjust the cam 27 g by means -o-frits arm 28. The eccentric 27 acts directly upon the journal boxing of the in roll 14. j

v The'vert-ical adjustment of the upper in roll 15 is accomplished in the manner following, having reference to Figs. 3 and 4: A rock shaft 37 extends longitudinally of the machine and vis adapted to be rocked by means of the lever 38 at the front of themachine adjacent the feed table, the position of said lever being determined by the notched sector 39. This shaft -has keyed thereon an upwardly extending arm 48 connected by Patented Feb. 5, 1918.

toY

means of rodsV 41V with cross head 42, V

`which latter is guided upon rod 43 secured at one end to the arm 44 and at the other end connected by a cross head 45 guided upon the rods 4,1. Springs 46 are mounted upon the rods 41 between the cross heads 42 and` 45, whereby the connection between the arms 40 and 44 is constituted a yielding one. At the rear of the machine a rocking shaft 47 ex tends parallel to the'shaft 37 and upon this shaftis loosely mounted the arm 44 which forms one member of a T-lever having an arm 48 extending horizontally and an arm 49 extending vertically downward. The arm 49 is connected by means of the link'50 with an arm 51 mounted loosely upon'the shaft 37 and having an integral horizontally extending arm 52. The arms 48 and 52 are both connected by means of lift rods 53, 53, to the journal boxes 17 17 of the upper inroll 15 at 54,54.k It will be observed that if the lever 38 is moved to the left, as shown 1 in FigzB, the shaft 37 willV be rocked and the arms 40 and 44 moved to the left thus lifting one of the rods 53 by -means of thearm48 and the companion rod 53 by means of the link 50 and the` arm 52, the reverse movement of the lever 38 will lower the upper inroll 15. The springs 46 interposed in the connection between the arms 40 and 44 provide for yielding support ofthe ln-roll' 15I Y, 772:.. i, Y

s'o-that .the ysame-An nay yieldslightly without: any resulting movement/ofthe shaft 37v or 1.--- The combination?,Y with La' lmachiiie* in`V cluding tools foracting on material suppliedYV thereto,of.feed rolls arrangedone above the 'otherto feed thematerial therebetween, the

l .77 i o y Vlever controlled.,rockl shaft, and 'yielding-link `Aconnections betweenitheroclr shaft and .the

.journal 'boxes oftheupper roll guided for vertlcalf 'movement 1n the machineV frame, a

upper rollvwhereby to'vertically adjust said roll, andra Jcouriterweight connectedlwith the upperiroll tofacilitate the,.verticalY adjustment thereof. A e t Y 2.1"1hey combination with'la machine 1nclu'ding tools forV acting on material supplied Y thereto, ofvfeed rollsy arranged one above the otherV to feedethe material;v therebetweeinthe v vjourn'al:boxes of the'. upper rollvguided for verticalfmoverm'ent injthe machine frame, -Y l Yandthevjo'urrnal boxes of thelower Vroll'lilre- I fwisev guided Vfor vertical adj ustment7 a' rock shaft, ai yielding link 'connection between the'rock'shaft and ,upp'ercroll whereby to ladjus'tthelatter vertically, afcam shaft, cams on saidshaft `acting upon the lower`V -A f roll,means for rocking both of said shafts independently .whereby to' vertically adjust thetwo .rolls and means to `itthe roclrshaftY inadjusted positionfw `f 2. 3; The e `combination `withY a' machine infclu-ding tools for acti11g`on-materialsupplied K A, thereto', OffeedrOllsarranged one above theY other to' feed the material' therebetween, the.

` journal-.boxes ofthe. upper roll guided forL 'fvertifc'al- 'movement in the machine frame,

i i l('.opiifefof thlspatent may tie obtained for and-the journalv boxes of the lowerroll li'lre y Vwi'seguided for vertical adjustment, a rock i shaft, 'Y al .yielding link connection between the roclrl shaft and upper rollrwhereby to adjust the latter vertically, a resilient element ,f incorporated .in vthe lnkroonnectiom a. cam

shaft, cams on said shaft -arctingeupon the "lower roll, means for rocking both of said Vshafts independently whereby to vertically adjust the two rolls, a counterweight connected with the upper roll to facilitate the vertical adjustment thereof and means to yoneach of the shafts and each comprising an upwardly extending, a horizontally extend1ng,'and a downwardly extending arm,

f linlrsconnecting the horizontally extendirur armsjof the two levers with the journa boxes, a rigidl link connecting a pan' of the.

`vertically extending arms of the two levers, a yleldlng sprmg lconnection between the other pair of vertically extending arms of the two levers, the Yarms of one of the T-levers having fixed relation to each other and one of the vertical arms of the other T-lever having angular movement independent of the other two arms of said lever, the movable arm of the second lever keyed upon one of the shafts, and means for rocking said shaft whereby to provide for manual vertical adjustment of the roll and also to provide for vertical yielding of the frame independently of the adjustment. Y

HARRISON J. MITCHELL.

.Witnessesz s, MARY C. BROWER, Y MILTON T lVIrLLnn.

lvecen'cs each. by addressing the "Commissioner ofPatents,

i j Washington D. C. 

